Here are the major external factors that cause aging and skin aging, it is up to you how to avoid these in order to maintain a young looking and vibrant skin. 1. The sun. This is the major external factor that caused aging. Experts say that aging caused by overexposure to the sun's ultra violet rays is called "photo-aging. But then, due to lack of knowledge and information, more and more people are misled to use products and avail of treatments without consulting a dermatologist or a physician resulting to a more devastating situation. To avoid mistakes in choosing skin care products and treatments, it is very important to have the knowledge about general causes of skin problems its types, the age of the patient, current status or condition so you know what are the products appropriate for each kind. Vitamin C as shield from the sun Vitamin C, as mentioned above, serves as a good shield from the sun, which harms the skin by drying it up and causing wrinkles and lines to show up. Vitamin C does this by neutralizing the reactive oxygen or free radicals, which is often caused by the interaction of sunlight, skin tissues and of course the cell membrane. Featuring products that are physician-formulated, the products are known to have sebum protection and oil control that are good acne bacteria destroyers while they remove dead skin cells through safe exfoliation. Like the others, the major components of the products are benzoyl peroxide, salicylic acid, and sulfur. Vitamin D from the sun can be helpful for many, but it can only be left to that since we all know that we actually need to protect our skin from the sun's harmful rays, especially from prolonged ultraviolet radiation. Here are some tips to make good use of sun exposure and avoid the dangers of getting too much of it. Last is chemical peel, which is a process supervised and administered by a dermatologist or licensed skin therapist, which provides better results compared to over the- counter chemical peel treatment kits. Chemical peels usually take an hour or so, but can achieve maximum results of making the skin look younger and shave as much as five years off your face.